Multi-stage spiral carbonization equipment

Abstract

The utility model relates to multistage spiral carbonization equipment applied to the field of sludge carbonization, which comprises a rack, a plurality of spiral carbonization structures positioned in the rack and a pyrolysis gas output structure mounted on the right side of the rack, the rack comprises a plurality of supporting seats, the upper ends of the plurality of supporting seats are jointly and fixedly connected with a supporting frame, and the lower ends of the plurality of supporting seats are fixedly connected with the pyrolysis gas output structure. A heat preservation layer is fixedly connected to the outer surface of the supporting frame, the multi-stage spiral drying equipment is stacked in a closed rack, the spiral carbonization structure and the rack form a closed hot flue gas flowing channel, and after hot flue gas is introduced, the hot flue gas continuously heats the multi-stage spiral drying equipment. The sludge in the spiral dryer exchanges heat with high-temperature flue gas, organic matters in the sludge are converted into pyrolysis gas, and in the carbonization process, external air does not easily enter the equipment, so that the conditions of over-high oxygen content and flue gas temperature reduction in the equipment are effectively avoided, and the sludge carbonization effect is further effectively improved.

Description

Technical Field

[0001] This utility model relates to a carbonization device, and more particularly to a multi-stage spiral carbonization device applied in the field of sludge carbonization. Background Technology

[0002] Most petrochemical enterprises use the "activated sludge process" to treat wastewater. After the wastewater is treated into clean water, a large amount of sludge remains in the plant. Since the remaining sludge contains a large amount of organisms and organic matter, sludge carbonization is the process in which the organic matter in the sludge undergoes a pyrolysis reaction under anaerobic conditions between 400-1200℃. The organic matter in the sludge is transformed into pyrolysis gas, and the inorganic matter and some carbon in the sludge are eventually transformed into sludge carbon.

[0003] Sludge carbonization equipment typically uses externally heated rotary carbonization equipment. This type of equipment consists of a rotating cylinder. There are gaps between the cylinder and the inlet / outlet ends, as well as between the cylinder and the outer jacket. This can easily cause external air to enter the cylinder and jacket, resulting in excessive oxygen content inside the cylinder, which affects the sludge carbonization effect. When air enters the outer jacket, it can lead to problems such as a decrease in flue gas temperature and a reduction in equipment thermal efficiency. Utility Model Content

[0004] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that the currently used external heating rotary carbonization equipment is prone to causing air from outside the cylinder to enter the cylinder and jacket during use, resulting in excessive oxygen content in the cylinder, which affects the carbonization effect of sludge. After air enters the outer jacket, it will lead to a decrease in flue gas temperature and a decrease in equipment thermal efficiency.

[0005] To address the aforementioned problems, this utility model provides a multi-stage spiral carbonization device, comprising a frame, multiple spiral carbonization structures located within the frame, and a pyrolysis gas output structure installed on the right side of the frame. The frame includes multiple support seats, with a support frame fixedly connected to the upper ends of the support seats. An insulation layer is fixedly connected to the outer surface of the support frame. An inlet pipe and an outlet pipe are fixedly connected to the upper and lower ends of the support frame, respectively. The spiral carbonization structure includes a frame-type bracket installed within the support frame. A spiral dryer is installed within the frame-type bracket, and guide plates and baffles are fixedly connected within the frame-type bracket. Both ends of the support frame are fixedly connected with output pipes. Multiple spiral carbonization structures are fixedly connected with expansion joints. Two adjacent output pipes are fixedly connected with expansion hoses. The pyrolysis gas output structure includes a high-temperature fan located at the front end of the support frame and a power structure fixedly connected to the upper end of the support frame. The high-temperature fan and the power structure are both fixedly connected to the adjacent expansion hoses. The outer surface of the output pipe is wrapped with an electric heating tape. The output pipe and the expansion hose are both equipped with a cleaning component. The cleaning component includes a chain located inside the output pipe and the expansion hose. Multiple scrapers are fixedly fitted on the outer surface of the chain.

[0006] In the aforementioned multi-stage spiral carbonization equipment, the multi-stage spiral drying equipment is stacked within a sealed frame. The spiral carbonization structure and the frame form a sealed hot flue gas flow channel. After the hot flue gas is introduced, it continuously heats the multi-stage spiral drying equipment. The sludge inside the spiral dryer exchanges heat with the high-temperature flue gas, and the organic matter in the sludge is transformed into pyrolysis gas. During the carbonization process, external air is not easily allowed to enter the equipment, thus effectively preventing excessive oxygen content and a drop in flue gas temperature inside the equipment, thereby effectively improving the sludge carbonization effect.

[0007] As a further improvement of this application, a feed pipe is fixedly connected to the outer surface of the uppermost spiral dryer, and the upper end of the feed pipe is fixedly connected through the support frame.

[0008] As a further improvement to this application, multiple spiral carbonization structures are installed in layers, with the upper and lower ends of the expansion joints fixedly connected to the adjacent spiral dryer, and the multiple expansion joints are distributed alternately from left to right.

[0009] As a further improvement of this application, the upper end of the chain is connected to the power structure, the scraper has a hollow circular structure, and the outer surface of the scraper located inside the output tube is in contact with the inner wall of the output tube.

[0010] As another improvement of this application, the air inlet pipe and the air outlet pipe are located on the left and right sides of the support frame, respectively, and both the air inlet pipe and the air outlet pipe are connected to the support frame.

[0011] As another improvement of this application, temperature sensors are installed on both the inlet pipe and the outlet pipe, and the spiral dryer, power structure, high-temperature fan, electric heating tape, and temperature sensors are all connected to an external controller.

[0012] In summary, during practical application, hot flue gas enters the frame through the inlet pipe and exits through the outlet pipe. The hot flue gas, aided by guide plates and baffles, flows back and forth within the cavity formed by the frame and the spiral carbonization structure, continuously heating the spiral carbonization structure. Material enters the spiral dryer through the feed pipe and is continuously stirred and tumbled during transport, gradually converting the organic matter in the sludge into pyrolysis gas. This pyrolysis gas is then discharged through the pyrolysis gas output structure under the action of a high-temperature fan. The sludge carbon formed after carbonization is discharged from the spiral carbonization structure. During this carbonization process, the spiral carbonization structure and the frame form a closed hot flue gas flow channel, making it difficult for external air to enter the equipment. This effectively prevents excessive oxygen levels and a drop in flue gas temperature inside the equipment, thereby significantly improving the sludge carbonization effect. Attached Figure Description

[0013] Figure 1 This is a structural cross-sectional view of the first embodiment of this application;

[0014] Figure 2 This is a right view of the structure according to the first embodiment of this application;

[0015] Figure 3 This is a left view of the structure according to the first embodiment of this application;

[0016] Figure 4 This is a schematic diagram of the spiral carbonization structure according to the first embodiment of this application;

[0017] Figure 5 This is a schematic diagram of the cleaning component structure according to the first embodiment of this application;

[0018] Figure 6 This is a cross-sectional view of the structure of the second embodiment of this application.

[0019] Explanation of the labels in the diagram:

[0020] 1. Frame, 11. Support frame, 12. Insulation layer, 13. Inlet pipe, 14. Outlet pipe, 15. Support base, 2. Spiral carbonization structure, 21. Spiral dryer, 22. Frame bracket, 23. Guide plate, 24. Baffle plate, 25. Output pipe, 3. Pyrolysis gas output structure, 31. Power structure, 32. Cleaning components, 321. Chain, 322. Scraper, 33. Electric heating tape, 34. High temperature fan, 4. Expansion joint, 5. Expansion hose, 6. Feed pipe, 7. Temperature sensor. Detailed Implementation

[0021] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0022] First implementation method:

[0023] Figure 1 , Figure 2 , Figure 3 and Figure 4The diagram shows a multi-stage spiral carbonization device, including a frame 1, multiple spiral carbonization structures 2 located within the frame 1, and a pyrolysis gas output structure 3 installed on the right side of the frame 1. The frame 1 includes multiple support seats 15, and a support frame 11 is fixedly connected to the upper ends of the multiple support seats 15. A heat insulation layer 12 is fixedly connected to the outer surface of the support frame 11. External hot flue gas enters the interior of the frame 1 through an inlet pipe 13. The heat insulation layer 12 can insulate the support frame 11, making it difficult for the internal flue gas to cool down. The upper and lower ends of the support frame 11 are respectively fixedly connected to... The inlet pipe 13 and outlet pipe 14 are located on the left and right sides of the support frame 11, respectively, which increases the path of the flue gas within the support frame 11, thereby fully heating the spiral dryer 21. Both the inlet pipe 13 and outlet pipe 14 are connected to the support frame 11. The spiral carbonization structure 2 includes a frame-type bracket 22 installed within the support frame 11. The frame-type bracket 22 supports and fixes the spiral dryer 21. The spiral dryer 21 is installed inside the frame-type bracket 22. Those skilled in the art can determine the appropriate configuration based on the actual situation. The appropriate model of spiral dryer 21 needs to be selected, such as KJG-50. A feed pipe 6 is fixedly connected to the outer surface of the uppermost spiral dryer 21 to facilitate the entry of sludge into the uppermost spiral dryer 21. The upper end of the feed pipe 6 is fixedly connected through the support frame 11. A guide plate 23 and a baffle plate 24 are fixedly connected inside the frame-type support 22. Hot flue gas, acting on the guide plate 23 and the baffle plate 24, flows back and forth within the cavity formed by the frame 1 and the spiral carbonization structure 2, continuously heating the spiral carbonization structure 2. Both ends of the support frame 22 are fixedly connected to the output pipes 25. Multiple spiral carbonization structures 2 are fixedly connected to each other. The expansion joints 4 facilitate the entry of sludge from the upper spiral dryer 21 into the lower spiral dryer 21. Multiple spiral carbonization structures 2 are installed in layers. The upper and lower ends of the expansion joints 4 are fixedly connected to the adjacent spiral dryers 21 respectively, and the multiple expansion joints 4 are staggered from left to right. Two adjacent output pipes 25 are fixedly connected to the expansion hoses 5. The output pipes 25 and the expansion hoses 5 facilitate the discharge of pyrolysis gas.

[0024] Figure 1 , Figure 2 , Figure 3 ,and Figure 5The diagram shows that the pyrolysis gas output structure 3 includes a high-temperature fan 34 located at the front end of the support frame 11 and a power structure 31 fixedly connected to the upper end of the support frame 11. Those skilled in the art can select a suitable model of high-temperature fan 34 according to actual needs, such as YX9-35. The power structure 31 is existing technology and can be moved by a motor or other power structure driving the chain 321. Technicians can choose according to actual needs, and further details are omitted here. Both the high-temperature fan 34 and the power structure 31 are fixedly connected to the adjacent expansion hose 5. The outer surface of the output pipe 25 is wrapped with an electric heating tape 33, which heats the output pipe 25, keeping the pipe temperature above 250°C to ensure that the pyrolysis gas does not cool down and coke. The output pipe 25... A cleaning component 32 is provided together with the expansion hose 5. The cleaning component 32 includes a chain 321 located in the output pipe 25 and the expansion hose 5. Multiple scrapers 322 are fixedly sleeved on the outer surface of the chain 321. The upper end of the chain 321 is connected to the power structure 31. The scrapers 322 have a hollow circular structure, and the outer surface of the scrapers 322 located in the output pipe 25 is in contact with the inner wall of the output pipe 25. Under the action of the power structure 31, the chain 321 circulates in a certain direction in the output pipe 25 and the expansion hose 5. During the movement, the scrapers 322 scrape off the tar adhering to the pipe wall, effectively preventing the pipe from coking and clogging. At the same time, the pyrolysis gas passes through the hollow part of the scraper 322 under the action of the high temperature fan 34, thereby ensuring the continuous output of hot gas.

[0025] During the carbonization of sludge, hot flue gas enters the frame 1 through the inlet pipe 13 and exits through the outlet pipe 14. The hot flue gas flows back and forth in the cavity formed by the guide plate 23 and the baffle plate 24, continuously heating the spiral carbonization structure 2. After the material enters the spiral dryer 21 through the feed pipe 6, it is continuously stirred and turned during the conveying process, so that the organic matter in the sludge is gradually converted into pyrolysis gas. The pyrolysis gas is discharged through the pyrolysis gas output structure 3 under the action of the high-temperature fan 34. The sludge carbon formed after carbonization is discharged from the spiral carbonization structure 2. During this carbonization process, the spiral carbonization structure 2 and the frame 1 form a closed hot flue gas flow channel, making it difficult for external air to enter the equipment. This effectively avoids the situation of excessive oxygen content and low flue gas temperature inside the equipment, thereby effectively improving the sludge carbonization effect.

[0026] Second implementation method:

[0027] This embodiment adds a temperature sensor 7 to the first embodiment, while the rest remains the same as the first embodiment.

[0028] Figure 6As shown, temperature sensors 7 are installed on both the air inlet pipe 13 and the air outlet pipe 14. Those skilled in the art can select a suitable model of temperature sensor 7 according to actual needs, such as WZP-231. The spiral dryer 21, the power structure 31, the high-temperature fan 34, the electric heating tape 33, and the temperature sensor 7 are all connected to the signal of the external controller.

[0029] During use, the temperature of the flue gas in the inlet pipe 13 and outlet pipe 14 is monitored by the temperature sensor 7. When the temperature fluctuates excessively, it can be adjusted in time, thereby effectively improving the carbonization effect of sludge.

[0030] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A multi-stage spiral carbonization device, comprising a frame (1), a plurality of spiral carbonization structures (2) located within the frame (1), and a pyrolysis gas output structure (3) installed on the right side of the frame (1), characterized in that: The frame (1) includes multiple support seats (15), and the upper ends of the multiple support seats (15) are fixedly connected to a support frame (11). The outer surface of the support frame (11) is fixedly connected to a heat insulation layer (12). The upper and lower ends of the support frame (11) are respectively fixedly connected to an air inlet pipe (13) and an air outlet pipe (14). The spiral carbonization structure (2) includes a frame-type bracket (22) installed in the support frame (11). The spiral dryer (21) is installed in the frame-type bracket (22). The guide plate (23) and the baffle plate (24) are fixedly connected in the frame-type bracket (22). The upper and lower ends of the frame-type bracket (22) are both fixedly connected to an output pipe (25). The multiple spiral carbonization structures (2) are fixedly connected to each other. An expansion joint (4) is fixedly connected between each other. An expansion hose (5) is fixedly connected between two adjacent output pipes (25). The pyrolysis gas output structure (3) includes a high-temperature fan (34) located at the front end of the support frame (11) and a power structure (31) fixedly connected to the upper end of the support frame (11). The high-temperature fan (34) and the power structure (31) are both fixedly connected to the adjacent expansion hose (5). The outer surface of the output pipe (25) is wrapped with an electric heating tape (33), and the output pipe (25) and the expansion hose (5) are provided with a cleaning component (32). The cleaning component (32) includes a chain (321) located in the output pipe (25) and the expansion hose (5). The outer surface of the chain (321) is fixedly fitted with multiple scrapers (322).

2. The multi-stage spiral carbonization equipment according to claim 1, characterized in that: The uppermost spiral dryer (21) has a feed pipe (6) fixedly connected to its outer surface, and the upper end of the feed pipe (6) is fixedly connected through the support frame (11).

3. The multi-stage spiral carbonization equipment according to claim 2, characterized in that: Multiple spiral carbonization structures (2) are installed in layers, and the upper and lower ends of the expansion joints (4) are fixedly connected to the adjacent spiral dryer (21) respectively, and the multiple expansion joints (4) are staggered from left to right.

4. The multi-stage spiral carbonization equipment according to claim 1, characterized in that: The upper end of the chain (321) is connected to the power structure (31), and the scraper (322) is a hollow circular structure. The outer surface of the scraper (322) located in the output tube (25) is in contact with the inner wall of the output tube (25).

5. The multi-stage spiral carbonization equipment according to claim 1, characterized in that: The air inlet pipe (13) and air outlet pipe (14) are located on the left and right sides of the support frame (11), respectively, and both the air inlet pipe (13) and air outlet pipe (14) are connected to the support frame (11).

6. The multi-stage spiral carbonization equipment according to claim 1, characterized in that: Temperature sensors (7) are installed on both the air inlet pipe (13) and the air outlet pipe (14). The spiral dryer (21), the power structure (31), the high-temperature fan (34), the electric heating tape (33), and the temperature sensors (7) are all connected to the external controller.

Images